WO2016131982A1 - Procédé de commande de charge d'essieu de roue d'un essieu de roue de véhicule - Google Patents

Procédé de commande de charge d'essieu de roue d'un essieu de roue de véhicule Download PDF

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Publication number
WO2016131982A1
WO2016131982A1 PCT/EP2016/053635 EP2016053635W WO2016131982A1 WO 2016131982 A1 WO2016131982 A1 WO 2016131982A1 EP 2016053635 W EP2016053635 W EP 2016053635W WO 2016131982 A1 WO2016131982 A1 WO 2016131982A1
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WO
WIPO (PCT)
Prior art keywords
wheel axle
vehicle
load
wheel
axles
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2016/053635
Other languages
English (en)
Inventor
Santhosh PATEL
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Volvo Truck Corp
Original Assignee
Volvo Truck Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Volvo Truck Corp filed Critical Volvo Truck Corp
Publication of WO2016131982A1 publication Critical patent/WO2016131982A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
    • B60G17/016—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input
    • B60G17/0165—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input to an external condition, e.g. rough road surface, side wind
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2300/00—Indexing codes relating to the type of vehicle
    • B60G2300/02—Trucks; Load vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/60—Load
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/60—Load
    • B60G2400/61—Load distribution
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/80—Exterior conditions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/80—Exterior conditions
    • B60G2400/82—Ground surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2800/00—Indexing codes relating to the type of movement or to the condition of the vehicle and to the end result to be achieved by the control action
    • B60G2800/01—Attitude or posture control
    • B60G2800/019—Inclination due to load distribution or road gradient
    • B60G2800/0192—Inclination due to load distribution or road gradient longitudinal with regard to vehicle

Definitions

  • the present invention relates to a method for controlling a wheel axle load on at least one of a first wheel axle and a second wheel axle of a vehicle.
  • the invention is applicable on vehicles, in particularly heavy duty vehicles such as trucks. Although the invention will mainly be described in relation to a truck, it is also applicable for other vehicles such as e.g. working machines or cars.
  • the vehicles should also be able to fulfil the desired and legal requirements independently of the load condition for the vehicle, i.e. during the entire driving trip when driving from a starting position to a final position.
  • the load on the wheels of the vehicle should not be too high or too low, since this will be unbeneficial for the above defined demands.
  • the object is at least partly achieved by the method for controlling a wheel axle load on at least one of a first wheel axle and a second wheel axle according to claim 1 .
  • a method for controlling a wheel axle load on at least one of a first wheel axle and a second wheel axle of a vehicle comprises the steps of receiving a signal indicative of a road gradient for the vehicle; determining a wheel axle load condition of at least one of the first and second wheel axles based on the received signal indicative of the road gradient; and determining whether the determined wheel axle load condition is unfavorable for the vehicle.
  • road gradient should in the following and throughout the entire description be interpreted as an inclination of a road.
  • the road may be the road onto which the vehicle is currently driving or may be the road ahead of the vehicle onto which the vehicle will be driving within a specific time period. Further details regarding the road gradient in front of the vehicle or the road gradient onto which the vehicle is currently driving is given below.
  • unfavorable load condition should in the following and throughout the entire description be interpreted as a load condition on at least one of the wheel axles of the vehicle that is unfavorable or unsatisfactory for the wheel axle or the vehicle.
  • An unfavorable load condition may, for example, result in that the handling of the vehicle will be reduced due to a too low pressure on the wheel axle connected to the steering wheel of the vehicle, increased tire ware due to a too large pressure on one of the wheel axles, etc.
  • Detailed example embodiments of unfavorable load conditions are given below. Advantages of the invention are that the wheel axle load condition can be
  • the present invention determines whether the road gradient will create a wheel axle load condition that is unbeneficial for the vehicle, i.e. if the load on the wheel axle(s) when driving on the road is, or will be, increased/decreased to such an amount that it is unbeneficial for the vehicle.
  • the method may comprise the step of sending a control signal with information for adjusting the wheel axle load of at least one of the first and the second wheel axles based on the determination of an unfavorable wheel axle load condition of the vehicle.
  • the wheel axle load on the wheel axles may be adjusted if it is determined that the wheel axle load condition is unfavorable.
  • An advantage is thus that the wheel axle load condition can be adjusted based on the specific road gradient such that a beneficial, or at least a non-unbeneficial, load condition for the wheel axles are achieved when driving on the specific road gradient. Adjusting the load condition for the wheel axles will provide for increased vehicle performance such as e.g.
  • the method may comprise the step of sending a control signal with information for adjusting a wheel axle suspension arrangement of at least one of the first wheel axle and the second wheel axle based on the determination of an unfavorable wheel axle load condition of the vehicle.
  • the wheel axle suspension arrangement when it is determined that the wheel axle load condition is unfavorable, the wheel axle suspension arrangement is controlled such that the load on the wheel axles are adjusted to be more beneficial. Hence, the pressure on the wheel axle suspension arrangement is adjusted.
  • the wheel axle suspension arrangement comprises an electronically controlled air bellow
  • the air pressure of the air bellows is adjusted. For example, if it is determined that the load condition on the first wheel axle is/will be too low due to the road gradient, i.e. the load pressure on the first wheel axle is too low and is in need of being increased in order to be beneficial, the air pressure in the electronically controlled air bellow suspension arrangement of the first wheel axle should be reduced. Likewise, if the load pressure on the first wheel axle needs to be reduced, the air pressure should be increased.
  • Other media than air is of course also conceivable for the wheel axle suspension arrangement, such as e.g. hydraulic fluid, etc.
  • the method may comprise the steps of comparing the determined wheel axle load condition with a predetermined load threshold range; and determining that the determined wheel axle load condition is unfavorable if the wheel axle load of at least one of the first and the second wheel axles falls outside the predetermined load threshold range.
  • the predetermined load threshold range sets the limits for a wheel axle load condition that is beneficial for the vehicle.
  • a load pressure of the vehicle which is either higher than the maximum load pressure value of the range or lower than the minimum load pressure value is considered to be an unbeneficial load condition for the vehicle.
  • the vehicle axle load pressure is too low, i.e. below the minimum load pressure value, the handling of the vehicle may be reduced and the driving wheels of the vehicle may not get enough grip to the ground surface and may therefore slip on the ground surface.
  • the wheel axle load pressure is too high, i.e. above the maximum load pressure value, the brake pad lifetime may be reduced, or the vehicle may not fulfil the legal requirements of maximum allowable wheel axle load.
  • the predetermined load threshold range may be set differently depending on the specific vehicle, the number of wheel axles arranged on the vehicle or a trailer connected to the vehicle, legal
  • the method may comprise the steps of comparing the wheel axle load of at least one of the first and the second wheel axles with a predetermined maximum allowable wheel axle pressure limit; and determining that the determined wheel axle load condition is unfavorable if the wheel axle load of at least one of the first and the second wheel axles is above the predetermined maximum allowable wheel axle pressure limit.
  • the wheel axle load condition is adjusted when it is determined that the load pressure on one of the first and the second wheel axles will be too high when driving on the road gradient.
  • the method may comprise the steps of comparing the wheel axle load of a driving wheel axle of the vehicle with a predetermined minimum allowable wheel axle pressure limit; and determining that the determined wheel axle load condition is unfavorable if the wheel axle load of a driving wheel axle of the vehicle is below the predetermined minimum allowable wheel axle pressure limit.
  • the wheel axle load condition is adjusted when it is determined that the load pressure on a driving wheel axle will be too low when driving on the road gradient.
  • the method may determine that the load pressure on the second wheel axle will not be too high or too low as a result of the adjustment. Adjustment of the load pressure of the first wheel axle is thus made such that the load pressure of the second wheel axle will be above the predetermined minimum allowable wheel axle pressure limit and below the predetermined maximum allowable wheel axle pressure limit.
  • the method may comprise the steps of receiving a signal indicative of a load distribution of the vehicle load on at least the first and the second wheel axles of the vehicle; and determining the wheel axle load condition of at least one of the first and the second wheel axles based on the received signal indicative of the load distribution.
  • the load pressure on the wheel axles may be received from load sensors arranged in connection to the wheel axles of the vehicle or from calculations relating to the load arranged on the vehicle and its center of gravity.
  • the method may comprise the steps of determining a change in load distribution between at least the first and the second wheel axles based on the received signal indicative of the road gradient; and determining the wheel axle load condition of at least one of the first and the second wheel axles based on the determined change in load distribution.
  • the method may comprise the steps of comparing the change in load distribution with a maximum allowable pressure limit; and determining that the determined wheel axle load condition is unfavorable if the change in load distribution is larger than the maximum allowable pressure limit.
  • the wheel axle load condition is determined to be unbeneficial.
  • the load pressure on the wheel axles can be adjusted such that the load distribution is approximately the same as before driving the road gradient.
  • the signal indicative of the road gradient may relate to an upcoming road gradient for the vehicle.
  • the vehicle can be prepared to adjust the wheel axle load before entering the road gradient, as described below. This is especially beneficial for systems where the adjustment is not executed immediately on request because of e.g. inertia of the system.
  • the signal indicative of the upcoming road gradient may be received from a GPS or collected from a look-up table in connection to a map or the like.
  • the method may comprise the step of adjusting the wheel axle load of at least one of the first and the second wheel axles based on the determination of an unfavorable load condition before the vehicle arrives at the upcoming road gradient for the vehicle.
  • the signal indicative of the road gradient may relate to a present road gradient of the vehicle.
  • the adjustment is executed while driving on the road gradient.
  • the signal indicative of the present road gradient may be received from a vehicle inclination sensor.
  • a sensor may, for example, be a gyroscope or the like.
  • the signal relating to the present road gradient may also be received from a GPS or a map.
  • the method may comprise the steps of determining a road section comprising a portion of the road ahead of a current position of the vehicle; and receiving a signal indicative of the road gradient along the determined road section.
  • the method may determine the load condition for the road gradient along the road section.
  • the road section may comprise several various road gradients.
  • the wheel axle load may hence be adjusted in response to the several road gradients well in advance of arriving at the respective road gradient.
  • the wheel axle load may be adjusted by means of a mean value of the inclination of the several road gradients, or it may be adjusted individually for each of the road gradients when arriving at them.
  • the road section may be a section which is positioned directly ahead of the vehicle and extends a predetermined distance ahead of the vehicle.
  • the specific distance of the road section can be set differently depending on e.g. the road topology, etc. For example, if the road ahead of the vehicle is very hilly, the road section can be set shorter than if the road ahead of the vehicle is relatively flat and non-hilly.
  • the first wheel axle is positioned foremost of the first and the second wheel axles, wherein the method may comprise the step of sending a control signal for reducing the wheel axle load on the first wheel axle if the received signal indicates that the road section along the determined road section is a downhill slope.
  • the first wheel axle is positioned foremost of the first and the second wheel axles, wherein the method may comprise the step of sending a control signal for increasing the wheel axle load on the first wheel axle if the received signal indicates that the road section along the determined road section is an uphill slope.
  • the method may comprise the step of adjusting the wheel axle load of at least one of the first and the second wheel axles based on the control signal.
  • a control unit for controlling a wheel axle load on at least one of a first wheel axle and a second wheel axle of a vehicle, wherein the control unit is configured to receive a signal indicative of a road gradient for the vehicle; determine a wheel axle load condition of at least one of the first and second wheel axles based on the received signal indicative of the road gradient; and determine whether the determined wheel axle load condition is unfavorable for the vehicle.
  • control unit is configured to perform any of the steps described above in relation to the first aspect of the present invention.
  • the control unit may be electrically connected to the wheel axle suspension arrangement of the vehicle for sending control signals for adjustment of the wheel axle suspension arrangements, respectively.
  • the control unit must however not be in direct electrical communication with the respective wheel axle suspension arrangement.
  • the control unit may of course be connected to the wheel axle suspension arrangement via another control unit, or the like, of the vehicle, or to an air tank for controlling the supply of compressed air to air bellows of the wheel axle suspension arrangement.
  • the control unit may also be connected to a CAN-bus of the vehicle which in turn distributes control signals to the wheel axle suspension arrangement.
  • control unit may comprise a module comprising receiving means for receiving a signal indicative of a road gradient for the vehicle, determination means for determining a wheel axle load condition of at least one of the first and the second wheel axles based on the signal received by the receiving means; and determination means for determining whether the wheel axle load condition is unfavorable for the vehicle.
  • the module may be realized by means of software implemented code in the control unit or as hardware which is electrically connected to the control unit. Effects and features of this second aspect of the present invention are largely analogous to those described above in relation to the first aspect of the present invention.
  • a system for controlling a wheel axle load on at least one of a first wheel axle and a second wheel axle of a vehicle comprising a control unit according to the above description of the second aspect of the present invention, and adjustment means for adjusting the wheel axle load of at least one of the first and the second wheel axles, wherein the adjustment means is operatively connected to the control unit for receiving a control signal from the control unit.
  • a computer program comprising program code means for performing any of the steps described above in relation to the first aspect of the present invention.
  • a computer readable medium carrying a computer program comprising program code means for performing any of the steps described above in relation to the first aspect of the present invention when the program is run on a computer.
  • a vehicle comprising a first wheel axle and a second wheel axle, wherein the vehicle comprises a control unit according to the above described second aspect of the present invention, or a system according to the above described third aspect of the present invention.
  • the first wheel axle and the second wheel axle may be connected to a frame of the vehicle.
  • the first wheel axle and the second wheel axle may be connected to the frame of the vehicle by means of a wheel axle suspension arrangement, respectively.
  • control unit may be configured to adjust the wheel axle load of at least one of the first and the second wheel axles based on the determination of an unfavorable wheel axle load condition of the vehicle by controlling a bellow pressure of the wheel axle suspension arrangement
  • control unit sends a control signal to the wheel axle suspension arrangement, or to a component controlling the wheel axle suspension arrangement, for increasing/decreasing the pressure of the wheel axle suspension arrangement.
  • air pressure of an air bellow suspension arrangement may be increased/decreased based on the received control signal from the control unit.
  • the frame may comprise a left and right vehicle frame member extending in a forward direction of the vehicle.
  • the at least one of the first and the second wheel axles may be connected to an axle casing, the axle casing being movable in relation to the frame of the vehicle.
  • the vehicle may comprise a tractor unit and a trailer unit, wherein the first wheel axle is connected to the tractor unit and the second wheel axle is connected to the trailer unit.
  • the control unit is connected to the wheel axles of the trailer unit as well as on the tractor unit.
  • the first and the second wheel axles may be provided with a load sensor unit, respectively, the load sensor unit being arranged to measure a load pressure from the vehicle.
  • the control unit may be further configured to measure a load pressure level of the respective wheel axle suspension arrangements.
  • the load sensor unit may be connected to the wheel axle suspension system of the vehicle.
  • the load sensor may be arranged to measure an air pressure level on an air bellow suspension arrangement.
  • Fig. 1 is a side view of a vehicle in the form of a truck according to an example embodiment, suitable for utilizing the present invention
  • Fig. 2 is a perspective view illustrating in detail an example embodiment of the frames, suspension arrangements, and wheel axles of the vehicle depicted in Fig. 1 ;
  • Fig. 3 is a flow chart illustrating components of a system according to an
  • Fig. 4 is a flow chart of a method according to an example embodiment of the present invention.
  • the tractor unit 2 comprises a tractor frame unit 9 and the trailer unit 3 comprises a trailer frame unit 10.
  • the tractor unit 2 comprises two wheel axles, namely a front tractor wheel axle 4 and a rear tractor wheel axle 5.
  • One of the front tractor wheel axle 4 and the rear tractor wheel axle 5 may constitute a first wheel axle of the vehicle.
  • the trailer unit 3 comprises, in the depicted example embodiment, three wheel axles, namely a front trailer wheel axle 6, a rear trailer wheel axle 7, and a trailer tag wheel axle 8, which is positioned rearward of the rear trailer axle 7 as seen in the longitudinal direction of the vehicle.
  • One of the front trailer wheel axle 6, the rear trailer wheel axle 7, and the trailer tag wheel axle 8 may constitute a second wheel axle of the vehicle.
  • the load from the vehicle which includes the vehicle load as well as the load which is loaded on the trailer unit 3 of the vehicle, is distributed over the wheel axles 4, 5, 6, 7 and 8.
  • the load pressure on each of the wheel axles is determined by the total load of the vehicle and its center of gravity.
  • the load pressure on each of the wheel axles is naturally also depending on the number of wheel axles arranged on the vehicle, and the present invention functions equally as well for vehicles having a further number of wheel axles or a lesser number of wheel axles then the vehicle depicted in Fig. 1 .
  • the vehicle according to the present invention does not have to carry a trailer unit 3.
  • the vehicle e.g. a truck
  • the frame onto which the container is positioned is arranged on the tractor unit.
  • the vehicle 1 depicted in Fig. 1 is thus beneficially utilizing the method as will be described in detail below.
  • the vehicle according to the example embodiment in Fig. 1 comprises the below described various components.
  • the tractor unit 2 comprises a tractor frame unit 9 as described above.
  • the front tractor wheel axle 4 and the rear tractor wheel axle 5 are each connected to the tractor frame unit 9 by means of a wheel axle suspension arrangement 202, in the following also referred to as a tractor unit wheel axle suspension arrangement.
  • the trailer unit 3 comprises a trailer frame unit 10 as described above.
  • the front trailer wheel axle 6, the rear trailer wheel axle 7 and the trailer tag wheel axle 8 are each connected to the trailer frame unit 10 by means of a respective wheel axle suspension arrangement 204, in the following also referred to as a trailer unit wheel axle suspension arrangement.
  • the wheel axle suspension arrangements are provided on each side of the frame unit in the lateral direction of the vehicle. Hence, a wheel axle suspension arrangement is arranged on each side of the respective wheel axles 4, 5, 6, 7, 8 for connection to the respective frame units of the vehicle. Furthermore, in the illustrated embodiment depicted in Fig. 2, the tractor unit wheel axle suspension arrangement 202 and the trailer unit wheel axle suspension arrangement 204 comprises a so-called air bellow suspension 206, respectively.
  • the air bellow suspensions 206 are electronically controlled by sending a control signal from a control unit 304 (See Fig. 3) to an air tank (not shown) comprising
  • the air bellow suspensions 206 are hence pneumatically arranged air bellow suspensions.
  • FIG. 2 depicts pneumatically arranged air bellow suspensions
  • other alternatives are of course also conceivable, such as e.g. hydraulically arranged suspension arrangements.
  • the wheel axles 4, 5, 6, 7, 8 are exposed to a load pressure from the weight of the vehicle 1 .
  • the load on the wheel axle should preferably not be too high or too low. If the load pressure is too low on e.g. the front tractor wheel axle 4 the steering handling will be reduced since not enough load pressure is provided between the wheels of the front tractor wheel axle 4 and the ground. On the other hand, if the load pressure on the front tractor wheel axle 4 is too high, the wheels of the front tractor wheel axle 4 may have a reduced life time, or the load pressure may exceed maximum allowable pressure levels according to legal criteria. Hence, it is important that the load pressure on the wheel axles is within a predetermined load threshold range. Load pressure levels outside this range are considered to be unbeneficial for the vehicle.
  • the load pressure on the wheel axles can be controlled by controlling the air pressure in the air bellow suspensions. If, for example, it is desirable to increase the load pressure on the front tractor wheel axle 4, the air pressure in the air bellow suspension arranged between the front tractor wheel axle 4 and the tractor frame unit 9 should be reduced.
  • the air pressure in the air bellow suspension arranged between the front tractor wheel axle 4 and the tractor frame unit 9 should be increased. It should also be readily understood that if the load pressure of the front tractor wheel axle 4 is adjusted, then the load pressure on at least one of the remaining wheel axles 5, 6, 7, 8 is also adjusted. Hence, the load pressure on the front tractor wheel axle 4 can also be adjusted by means of adjusting the air pressure of at least one of the remaining wheel axles 5, 6, 7, 8 of the vehicle.
  • the wheel axle load condition is naturally different in comparison to when driving in an upwardly or downwardly inclined slope.
  • the load pressure on the front tractor wheel axle 4 is increase in comparison to when driving on the relatively horizontal road surface.
  • the load pressure on the rear wheel axles, i.e. the rear trailer wheel axle 7 and the trailer tag axle 8 will be reduced when driving on the downwardly inclined slope.
  • the load pressure on the front tractor wheel axle 4 is reduced in comparison to when driving on the relatively horizontal road surface.
  • Fig. 3 is a flow chart illustrating components of a system according to an embodiment for executing the method of the present invention.
  • the system 300 is configured to be implemented on a vehicle 1 as depicted in Fig. 1 and comprises a road gradient determination means 302 for determining the road gradient for the vehicle, and a control unit 304.
  • the control unit 304 is in turn connected to the each of the wheel axle suspension arrangements 202, 204 described above.
  • the control unit 304 may however be connected to an air tank or a hydraulic fluid tank which supplies air/fluid to the wheel axle suspension
  • control unit sends control signals to the air tank or hydraulic tank which in turn supplies air/fluid to the wheel axle suspension arrangement 202, 204.
  • control unit 304 comprises a wheel axle load condition means 306, a comparison means 308 and a wheel axle load determination means 310.
  • wheel axle load condition means 306, the comparison means 308 and the wheel axle load determination means 310 are described as being a respective part of the control unit 304, they may equally as well constitute a separate means from the control unit 304. In such a case, the control unit is in connection to each of the means to receive information/data therefrom, or to provide information/data thereto.
  • the road gradient determination means 302 is, as stated above, arranged to determine the road gradient for the vehicle 1 .
  • the road gradient may relate to the road gradient of which the vehicle is presently driving, or to an upcoming road gradient for the vehicle.
  • the road gradient determination means 302 can also determine the road gradient for a road section of predefined length in front of the vehicle during driving.
  • the road gradient determination means 302 may comprise e.g. a GPS, a gyroscope, a map, or other suitable means for detecting and determining the inclination of the road.
  • the road gradient determination means thus receives information regarding either the present road inclination or an upcoming road inclination of the road onto which the vehicle is driving.
  • the signal indicative of the road gradient is thereafter provided to the control unit 304.
  • the control unit 304 thus receives the signal from the road gradient determination means 302, and the wheel axle load condition means 306 of the control unit 304 determines a wheel axle load condition of at least one of the wheel axles 4, 5, 6, 7, 8 of the vehicle based on the received signal from the road gradient determination means 302.
  • the wheel axle load condition means 306 determines the load pressure on at least one of the wheel axles, preferably all the wheel axles, based on the road gradient.
  • the wheel axle load condition means 306 may determine the load pressure on the wheel axles by means of calculating the load on the respective wheel axles as a function of the load distribution of the vehicle and the inclination of the road gradient.
  • the determined/calculated load condition for the wheel axles 4, 5, 6, 7, 8 of the vehicle is thereafter compared to a predetermined set of rules.
  • the comparison is executed by means of a comparison means 308 which thus compares the wheel axle load condition of the at least one wheel axle with e.g. the above described predetermined load threshold range.
  • the wheel axle load determination means 310 of the control unit 304 determines whether the wheel axle load condition for the wheel axle is unfavorable for the vehicle 1 . More specifically, the wheel axle load determination means 310 receives information from the comparison means for determining if the load condition of the wheel axles is such that the load pressure is either too high or too low in relation to the predetermined load threshold range.
  • a signal is received S1 , which signal is indicative of a road gradient for the vehicle.
  • the road gradient may, as described above, relate to the present/current road gradient of the vehicle, or to an upcoming road gradient for the vehicle.
  • the wheel axle load condition for at least one of the wheel axles of the vehicle is determined S2 based on the received signal indicative of the road gradient.
  • the wheel axle load condition is unfavorable for the vehicle 1 . It may hence be determined if e.g. the wheel axle load of the respective wheel axles are too high or too low. If the wheel axle load condition is determined to be unfavorable for the vehicle, the wheel axle load is adjusted. This can be made by adjusting the wheel axle suspension arrangement for at least one of the wheel axles 4, 5, 6, 7, 8 of the vehicle. It is to be understood that the present invention is not limited to the embodiments described above and illustrated in the drawings; rather, the skilled person will recognize that many changes and modifications may be made within the scope of the appended claims.
  • the wheel axle load condition means, the comparison means, the road gradient determination means and the wheel axle load determination means may also be constituted by modules arranged to execute the above described functionalities, i.e. a wheel axle load condition module, a comparison module, a road gradient determination module and a wheel axle load determination module. Also, one or more of the means/modules may be excluded from the system. Its
  • functionality/functionalities may instead be included in one of the other modules.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

La présente invention concerne un procédé pour commander une charge d'essieu de roue sur un premier essieu de roue et/ou un second essieu de roue d'un véhicule (1), le procédé consistant à recevoir (S1) un signal indiquant une déclivité de route pour ledit véhicule (1) ; à déterminer (S2) un état de charge d'essieu de roue d'au moins un des premier et second essieux de roue sur la base du signal reçu indiquant la déclivité de route ; à déterminer (S3) si l'état de charge d'essieu de roue déterminé est défavorable pour le véhicule (1). L'invention concerne également une unité de commande correspondante, un système et un véhicule.
PCT/EP2016/053635 2015-02-20 2016-02-22 Procédé de commande de charge d'essieu de roue d'un essieu de roue de véhicule Ceased WO2016131982A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN821/CHE/2015 2015-02-20
IN821CH2015 2015-02-20

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WO2016131982A1 true WO2016131982A1 (fr) 2016-08-25

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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CN111479742A (zh) * 2017-12-22 2020-07-31 斯堪尼亚商用车有限公司 用于控制包括在车辆操作期间对至少一个车辆进行轴负载控制的车辆操作的方法和控制设备
CN115402338A (zh) * 2021-05-26 2022-11-29 比亚迪股份有限公司 车辆牵引力控制方法、装置、车辆、控制器及存储介质
EP4212367A1 (fr) * 2017-01-04 2023-07-19 Aktv8 Llc Système et procédé de gestion de charge de véhicule
IT202200025041A1 (it) * 2022-12-06 2024-06-06 Fca Italy Spa "Sistema e procedimento di controllo di un autoveicolo durante la marcia su strada in pendenza"
CN119567783A (zh) * 2025-02-06 2025-03-07 浙江万安科技股份有限公司 一种车辆用悬架高度自适应方法及系统

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EP4212367A1 (fr) * 2017-01-04 2023-07-19 Aktv8 Llc Système et procédé de gestion de charge de véhicule
CN106809207A (zh) * 2017-01-19 2017-06-09 无锡南理工新能源电动车科技发展有限公司 一种电动车辆载重和坡度自适应控制方法及其车辆
CN106809207B (zh) * 2017-01-19 2019-04-05 无锡南理工新能源电动车科技发展有限公司 一种电动车辆载重和坡度自适应控制方法及其车辆
CN111479742A (zh) * 2017-12-22 2020-07-31 斯堪尼亚商用车有限公司 用于控制包括在车辆操作期间对至少一个车辆进行轴负载控制的车辆操作的方法和控制设备
CN111479742B (zh) * 2017-12-22 2023-08-04 斯堪尼亚商用车有限公司 用于控制车辆操作的方法和控制设备
CN115402338A (zh) * 2021-05-26 2022-11-29 比亚迪股份有限公司 车辆牵引力控制方法、装置、车辆、控制器及存储介质
IT202200025041A1 (it) * 2022-12-06 2024-06-06 Fca Italy Spa "Sistema e procedimento di controllo di un autoveicolo durante la marcia su strada in pendenza"
CN119567783A (zh) * 2025-02-06 2025-03-07 浙江万安科技股份有限公司 一种车辆用悬架高度自适应方法及系统

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